Jtand schneider



(N o'ModeL) P. S. F. SCHNEIDER.

APPARATUS FOR TRANSFORMING CONTINUOUS ELECTRIC CURRENTS INTO ALTERNATING GURRENTS.

No. 524,911. Patented Aug. 21, 1894.

0 0 J2 Li UNITED STATES PATENT OFFICE.

FRANZ SEVIRIN FERDINAND SCHNEIDER, OF FULDA, GERMANY.

APPARATUS FOR TRANSFORMING CONTINUOUS ELECTRE C CURHENTS INTO ALTERNATING CURRENTS.

SPECIFICATION forming part of Letters Patent No. 524,91 1, dated August 21,1894.

Application filed March 20, 1894. Serial 110.504.434- (No model.)

To aZZ whom it may concern:

Be it known that I, FRAN SEVIRIN FERDI- -NAND SCHNEIDER, electrical engineer, a subect of the Emperor of Germany, residing at of which the following is a specification, reference being had to the accompanying drawings.

My invention relates to apparatus for transforming continuous electric currents into alternating currents.

In the accompanying drawings-Figure 1 is a side elevation of my improved apparatus, showing the circuits and battery; andFig. 2 is a diagram which will be understood from the de ailed description. I

An apparatus constructed according to my said invention comprises two electrp'magnets a b and a pair of armatures c d which are arranged to be moved by means of a rocking lever e-in such a manner that, while always remaining in the field of the electromagnets a, b, they can only approach the cores alter= nately. The ends of the conducting wires f g and fgjoining the exciting coils of these electromagnets are on the one hand attached to a connecting piece 2' permanently united with the negative conducting wire h of the battery B, and on the other hand to a binding screw is or Z at the base of each of the columns 7a Z which are fixed to the bed plate m of the apparatus with interposition of an insulator. These columns present attheir up- -per end a contact piece, such as a screw 70 or supported by the pivot 10 of a central column qforked at its upper end, presents moreover at each. end a counter-weight 0' preferably made of two parts andadapted to be adj ustedby means of a screw thread. These counterweights are designed to overbalance one of the arms, for instance that which is on the left hand side in the arrangement shown, so thatwhen no current flows through the apparatus the rocking lever occupies the position indicated, that is to say, the armature cbears upon the core of the 'electromagnet a and the spring o upon the screw Z while neither the conta'ct pieces 75* n or the armature dand the core of the electromagnet b are in contact. It now the battery circuit is closed by means of a suitable press button D or the like the current will pass through the conducting wires h g, the coil of the electromagnet b on the right and through the w1re g to the binding screw Z',contact pieces Z and o, the rocking lever e'and its pivot 19, the central column q, secured for this-purpose upon the bed plate on with interposition of a nonconductor, to the bindingscrew 8, t() W l1l0l'l the positive wire 25 of the battery B 1s oined. The ,electromagnet b. excited in. this manner attracts its armature d; the contact pieces Z 0 come out of contact and cause the interruption of the circuit passing through the coil of the electromagnet b, while the contact pieces n, close the circuit through the coil of the electromagnet a on the left in a similar mannor as set forth with reference to that on'the' right hand side. Accordingly the left hand arm of the rocking leveris now lowered by the attraction-of the armature c, and the cir-' cuit for the left hand electromagnet is then interrupted by the separation of the contact pieces-7r n, but the circuit for thought hand electro-magnet is closed again by the contact of the parts Z 0, 820., the interruption of one circuit always taking place after the other 011'- cuit has been closed.

- At the base of the columns It Z I prov de, besides two binding screws 70' Z, also the binding screws 70?, 1 which permit of the oining fop example of a telephoneor telegraph wire it 1; connected to earth. Into this wire, in which for instance a known alternating current alarm W is included, pass the extra currents which occur when the circuits leading through the coils of the electromagnets are closed and opened. As the main currents differ in their direction this is also the case with regard to the extra currents. In the position shown in Fig. 1, the extra current produced by the electromagnet a will, after the circuit has been interrupted at W, flow as fol lows, that is to say through f, it, 76 u, E E W o Z 11 019 q 25 B h 2f. These extra currents may alsobestrengthencdbyinductioncoils. Such an apparatus, by reason of its small dimenstone, is adapted to be arranged in the casing of a microscope, and renders it superfluous to set a crank in motion, such as is necessary in the ease of rotary inductors.

The alternating current produced in this manner may be utilized in Various manners and for various purposes. Thus the alterhating extra currents may for instance be used for regulating the movement of clocks. Moreover the alternating extra currents may be employed directly for telegraphic The rocking lever then serves as a key, while the key included in the conducting Wire and resembling; the clapper of an alternating current bell will, by means of the extra current, make the same vibrations or signs at the reee1ver stations.

A certain: amount of energy is of course used for the operationof this apparatus; the useful effect consists in employing with loss of energy short current pulsations of high tension, which is desirable in certain circumstances, in lieu of the currents of Weak tenslon which last longer and are taizen from the battery.

What I claim is- 1. In a transformer, the combination with two electromagnets included in two primary circuits and a battery common to both circuits, of a rocking armature carrying contacts operating to alternately make and break said circuits, and a secondary conductor having its terminals connected with the primarycircuits between the magnets and the circuit breakers, substantially as described.

2. In a transformer, the combination with the electromagnets a, b,.included in two primary circuits, the contacts 712 ,1 forming the terminals of said circuits, a battery common to both of said circuits, a rocking armature e icarrying contacts a, 0, adapted to alternately engage the contacts 70 P, a. conductor connecting said armature with the battery, and a secondary conductor havingits terminals 0on nected with theprimary circuits between the magnets and the circuit breakers, substantially as described.

3. In a transformer, the combination with the el'ectroinagnets a, b,'of the rocking armatnre e carrying the contacts n, o, the contacts k tfladapted to be engaged thereby, the buttery B, the connecting plate 1, a conductor connecting said plate with the battery, two conductors connecting said plate with the magnets and with the contacts 70*, P, a conductor connecting the rocking armature with the. battery, and a secondary conductor haw ing its terminals connected with the primary circuits between the magnets and the circuit breakers, substantially as described.

In testimony whereof I have hereunto set my hand this 3d day of March, 1894.

FRANZZSEVIRIN FERDINAND SCHNEIDER.

Witnesses:

JEAN GRUND, O. L. THEODOR ll lllLLERi 

